package com.walmartlabs.concord.common;

/*-
 * *****
 * Concord
 * -----
 * Copyright (C) 2017 - 2020 Walmart Inc.
 * -----
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * =====
 */

public final class StringUtils {

    public static String abbreviate(String str, int maxWidth) {
        if (str == null) {
            return null;
        }

        if (maxWidth < 4) {
            throw new IllegalArgumentException("Minimum abbreviation width is 4");
        }

        if (str.length() <= maxWidth) {
            return str;
        }

        return str.substring(0, maxWidth - 3) + "...";
    }

    private StringUtils() {
    }
}
